Answer:
The finding demonstrated that the capacity of a child’s linguistic ability could be based on experience and not because of language learning difficulty.
Step-by-step explanation:
Hart and Risley conducted this study to understand the effect of socio-economic status (SES) on children's' linguistic experience. They found out that children from low income or poor socio-economic families had a high chance of developing poor mental and physical ability.
They conducted this study among children belonging from different socio-economic statuses. They observed that children belonging from higher SES background demonstrated more vocality and outspokeness.
They also observed that parents' sociableness and talkativeness had a direct impact on children's linguistic development.